package filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class LoginFilter implements Filter {
    public LoginFilter() {
    }


	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest) request;
		HttpServletResponse resp = (HttpServletResponse) response;
		HttpSession session = req.getSession();
		String name =  (String) session.getAttribute("name");
		if (name == null) {
			resp.sendRedirect("/admins/login.jsp");
		}else{
			chain.doFilter(request, response);
		}		
	}


	@Override
	public void init(FilterConfig filterConfig) throws ServletException {
		
	}


	@Override
	public void destroy() {
		
	}


}
